<?php
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
function show_json($status = 1, $return = NULL) {
$ret = array('status' => $status, 'result' => array());
if (!is_array($return)) {
if ($return) {
$ret['result']['message'] = $return;
}
exit(json_encode($ret));
} else {
$ret['result'] = $return;
}
exit(json_encode($ret));
}
if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
exit; // finish preflight CORS requests here
}
if ( !empty($_REQUEST['debug']) ) {
$random = rand(0, intval($_REQUEST['debug']) );
if ( $random === 0 ) {
header("HTTP/1.0 500 Internal Server Error");
exit;
}
}
@set_time_limit(0);
$targetDir = 'uploads/file_material_tmp';
$uploadDir = 'uploads/file_material/'.date('Ymd');
$cleanupTargetDir = true; // Remove old files
$maxFileAge = 5 * 3600; // Temp file age in seconds
$mode = 0777; // 0777 权限
// Create target dir
if (!file_exists($targetDir)) {
@mkdir($targetDir, $mode,true);
@chmod($targetDir, $mode);
}
// Create target dir
if (!file_exists($uploadDir)) {
@mkdir($uploadDir, $mode, true);
@chmod($uploadDir, $mode);
}
// Get a file name
if (isset($_REQUEST["name"])) {
$fileName = $_REQUEST["name"];
} elseif (!empty($_FILES)) {
$fileName = $_FILES["file"]["name"];
} else {
$fileName = uniqid("file_");
}
$oldName = $fileName;
$filePath = $targetDir . DIRECTORY_SEPARATOR . $fileName;
// $uploadPath = $uploadDir . DIRECTORY_SEPARATOR . $fileName;
// Chunking might be enabled
$chunk = isset($_REQUEST["chunk"]) ? intval($_REQUEST["chunk"]) : 0;
$chunks = isset($_REQUEST["chunks"]) ? intval($_REQUEST["chunks"]) : 1;
// Remove old temp files
if ($cleanupTargetDir) {
if (!is_dir($targetDir) || !$dir = opendir($targetDir)) {
show_json(100, 'Failed to open temp directory.');
}
while (($file = readdir($dir)) !== false) {
$tmpfilePath = $targetDir . DIRECTORY_SEPARATOR . $file;
// If temp file is current file proceed to the next
if ($tmpfilePath == "{$filePath}_{$chunk}.part" || $tmpfilePath == "{$filePath}_{$chunk}.parttmp") {
continue;
}
// Remove temp file if it is older than the max age and is not the current file
if (preg_match('/\.(part|parttmp)$/', $file) && (@filemtime($tmpfilePath) < time() - $maxFileAge)) {
@unlink($tmpfilePath);
}
}
closedir($dir);
}
// Open temp file
if (!$out = @fopen("{$filePath}_{$chunk}.parttmp", "wb")) {
show_json(102, 'Failed to open output stream.');
}
if (!empty($_FILES)) {
if ($_FILES["file"]["error"] || !is_uploaded_file($_FILES["file"]["tmp_name"])) {
show_json(103, 'Failed to move uploaded file.');
}
// Read binary input stream and append it to temp file
if (!$in = @fopen($_FILES["file"]["tmp_name"], "rb")) {
show_json(101, 'Failed to open input stream.');
}
} else {
if (!$in = @fopen("php://input", "rb")) {
show_json(101, 'Failed to open input stream.');
}
}
while ($buff = fread($in, 4096)) {
fwrite($out, $buff);
}
@fclose($out);
@fclose($in);
rename("{$filePath}_{$chunk}.parttmp", "{$filePath}_{$chunk}.part");
$index = 0;
$done = true;
for( $index = 0; $index < $chunks; $index++ ) {
if ( !file_exists("{$filePath}_{$index}.part") ) {
$done = false;
break;
}
}
if ( $done ) {
$pathInfo = pathinfo($fileName);
$hashStr = substr(md5($pathInfo['basename']),8,16);
$hashName = time() . $hashStr . '.' .$pathInfo['extension'];
$uploadPath = $uploadDir . DIRECTORY_SEPARATOR .$hashName;
if (!$out = @fopen($uploadPath, "wb")) {
show_json(102, 'Failed to open output stream.');
}
if ( flock($out, LOCK_EX) ) {
for( $index = 0; $index < $chunks; $index++ ) {
if (!$in = @fopen("{$filePath}_{$index}.part", "rb")) {
break;
}
while ($buff = fread($in, 4096)) {
fwrite($out, $buff);
}
@fclose($in);
@unlink("{$filePath}_{$index}.part");
}
flock($out, LOCK_UN);
}
@fclose($out);
$response = [
'success'=>true,
'oldName'=>$oldName,
'filePaht'=>$uploadPath,
'fileSuffixes'=>$pathInfo['extension'],
'hashName' => $hashName
];
// 当status返回1时,为上传成功,其他则失败
show_json(1, array('message' => '上传成功', 'info' => $response));
}
show_json(200, array('message' => '上传成功中'));
?>